4 layers29.8 × 68.1 mm

BDEcho AKit Sidekick r3
Boondock-Echo/Boondock-Hardware
Hardware Design Files, BOM, Assembly Instructions, etc.
49 parts12
KiCad boards from 1 GitHub repository tagged “boondock”, the most starred first; open any of them in PCBKit.

Boondock-Echo/Boondock-Hardware
Hardware Design Files, BOM, Assembly Instructions, etc.